Konami isn't finished updating Metal Gear Solid 5: The Phantom Pain. The game is still set to receive updates well after its launch way back in 2015. The latest update will provide PlayStation 4 Pro gamers with a few new goodies to experience in Hideo Kojima's swan song for Konami.
In a Facebook post, the official Metal Gear Solid page posted an update indicating that PS4 Pro gamers who have a 4K screen can currently play Metal Gear Solid 5: The Phantom Pain with 4K support and a more stable frame-rate. The post, however, does not mention if the 4K update is native or checkerboarded. The difference is that one is a native resolution of 3840 x 2160 while the other attempts to upscale a lower internal resolution to match a 4K output. Checkerboarding can help with dynamic resolution scaling to cut down on the processing overhead.
Polygon, however, did reach out to Konami to get a clarification on that and the company responded by stating that resolutions up to 2560 x 1440p would be supported, so it appears as if Metal Gear Solid 5 won't be native 4K but will instead support checkerboard upscaling to match the output of 4K televisions.
However, if you don't have a 4K television or you're not all that interested in a 4K update for the game, Konami also has some other improvements rolled out for the game. The update includes a performance update for Metal Gear Solid 5: The Phantom Pain so that the game has more stable frame-rates no matter at what resolution you play the game.
Some gamers were confused about the the frame-rate comments because the Fox Engine was already finally tuned to enable 1080p at 60fps performance specs on the PS4. So, quite naturally, gamers wondered how much more improved the frame-rates could be for the PS4 version? Well, according to Polygon the frame-rate improvements are for some of the cutscenes, which apparently weren't running the smoothest before.
The update seems a bit late to the party given how long the game has been out, but it is free so there isn't much to lose.
Fans, however, have been somewhat angry about the update because they feel Konami should have used those resources to finish the final chapter of the game that was cut during the middle of development after Konami had Kojima and his team to stop working on the game. In other words, gamers would have preferred a patch that completed the game's story as opposed to a free 4K update.
Either way, if you already own the game and you also own a 4K TV and you also own a PlayStation 4 Pro, there's absolutely no detriment to grabbing the patch and playing the game with upscaled 4K support.